a member of the National Socialist German Workers' Party, which controlled Germany from 1933 to 1945 under Adolf Hitler and advocated totalitarian government, territorial expansion, anti-Semitism, and Aryan supremacy, all these leading directly to World War II and the Holocaust.

SJW is a person, to whom micro-aggressions are a religion, and victimhood is the noblest of pursuit.

SJW is the person that gets PTSD from tumbler micro-aggressions.

SJW is a person who will go out of his way to find viewpoints in which to call things racist, and will spare no effort (often costing him/her sanity) in order to make you understand how terrible, problematic, racist, nazi you are.

SJW is a person who, should they actually have to debate, will become a victim that needs to be defended, and will avoid any argument should it be presented in a form where he can't call you privileged, white, CIS scum that should die to make amends.

Generally, all of these are caricatures, but will hold some shed of truth in your run-ins with them. They're human versions of Fabergé eggs, glowing in virtuosity of their actions sparing no effort to display it for all of the world, but are fragile and hollow. And should push come to shove, I'd rather not be there when their world comes crashing down and they realize the double-think, because grander the shell that will crack, more unpredictable are the results. And I for one don't want to be caught in the blast.

In summary:
SJW does not currently have a working, strict, understood, objective definition and/or criteria. SJW is defined individually. One may say it is how people react a certain way, certain beliefs held, or even a combination of beliefs and action. The term SJW does not only carry a ton of ideological baggage, but it is also unrestrained—an abstract, malleable and diverse definition. It lacks neutrality and often promotes descent of behavior, compromise, and discourse. It is, however, useful in disparaging perceived character types.